What to expect and how to act on the first date?

I have been talking to this guy now for about two days. He asked me out tonight and he’ll be here in an hour. I was wondering if there is anything in particular that I need to be careful with. We are meeting to get to know each other more… we are going out to eat. And what advice can you share to not make things awkward and also should I let my step-father know… like when the guy comes to pick me up, should I tell him to come inside and meet my step-dad just so they can know who I am with if anything happens haha.